The purpose of the Guide to Concrete Overlays of Asphalt Parking Lots is to provide information for decision makers and practitioners about selecting, designing, and constructing successful concrete overlays on existing asphalt parking lot pavements. Initiated by the National Ready Mixed Concrete Association Promotion Committee and funded by the RMC Research & Education Foundation, this 64 page guide is produced by the National Concrete Pavement Technology Center (National CP Tech Center) at Iowa State University's Institute for Transportation. It is a companion document and follows a format similar to the Guide to Concrete Overlays: Sustainable Solutions for Resurfacing and Rehabilitating Existing Pavements and the Guide to the Design of Concrete Overlays Using Existing Methodologies, both of which were also developed by the National CP Tech Center.